SAN FRANCISCO (AP) — Patrick Bailey hit a walk-off three-run homer and the San Francisco Giants beat the Pittsburgh Pirates 3-0 on Friday. The game was scoreless until the ninth, when Michael Conforto walked and Matt Chapman singled to begin the inning off Pirates reliever David Bednar. Bailey then drilled a homer to right field. Both starters, San Francisco’s Kyle Harrison, and Pittsburgh’s Quinn Priester, each pitched six innings. Harrison struck out seven and gave up five hits.